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Suchbegriff:

Batteries, Fuel Cells, and Electrochemical Processes

Implementation of an Active Fluid Cooling Design in a 48 V High-Power Battery Module

Z. Wu [1], A. Stawarski [2], H. Kemper [2],
[1] Energy Storage Systems, FH Aachen - University of Applied Sciences, Aachen, Germany; RWTH Aachen University, Aachen, Germany
[2] Energy Storage Systems, FH Aachen - University of Applied Sciences, Aachen, Germany

Individual batteries have their own operational temperature ranges, which shall be respected to avoid both damaging of the cells and shortening of the cycle life. In terms of the Li-Ion cells, many of them do not function well at higher temperatures. Therefore, a better understanding of ... Mehr lesen

Copper Electrochemical Polishing Optimisation

A. Pérez Rodríguez [1], L. Marques Antunes Ferreira [1],
[1] CERN, Geneva, Switzerland

A new electrochemical polishing facility will be built at CERN to process copper radiofrequency structures and this in the framework of the Future Circular Collider study. This polishing installation will be designed and assembled so that the necessary working conditions to achieve the ... Mehr lesen

A Computational Study of Stoichiometry Sensitivity of a PEM Fuel Cell with Multi-Parallel Flow Channels

M. A. Rahman [1], J. M. Mora [2], P. A. Chuang [1],
[1] School of Engineering, University of California, Merced, CA, USA
[2] University of the Philippines - Diliman, Quezon City, Philippines

Flow channel design in a PEM fuel cell plays a critical role for uniformly distributing reactants to the reaction sites and effectively removing product water to prevent flooding. Simplistic design and uniform reactant distribution make parallel channels a potential candidate for ... Mehr lesen

Simulation of Neurotransmitter Sensing by Cyclic Voltammetry under Mechanical Motion of a Neural Electrode

S. Han [1], M. Polanco [2], S. Bawab [2], H. Yoon [1]
[1] Norfolk State University, Norfolk, VA, USA
[2] Old Dominion University, Norfolk, VA, USA

Neural electrodes for sensing neurotransmitters are embedded within the brain, detecting electrical signals produced by kinetic reaction of neurotransmitters in the brain. Sensing utilizes cyclic voltammetry (CV), which applies sweeping potentials to identify chemical kinetics of ... Mehr lesen

A Phase Field Model for Lithium Ion Battery Particles

R. Painter [1], L. Sharpe [2], S. K. Hargrove [2],
[1] Department of Civil Engineering, Tennessee State University, Nashville, TN, USA
[2] Department of Mechanical Engineering, Tennessee State University, Nashville, TN, USA

In this study, a three-dimensional (3-D) phase field model was developed to better understand the parameters impacting the LiFePO4 cathode material in lithium ion batteries. LiFePO4 has a strong tendency to separate into stable high Li+ concentration and low Li+ concentration phases, ... Mehr lesen

Effect of Mass Flow Induced by a Reciprocating Paddle on Electroplating

M. Fukukawa [1], L. Tong [1],
[1] Keisoku Engineering System Co. Ltd., Tokyo, Japan

The reciprocating paddle electrochemical plating cells have been widely applied in microelectronics industry [1-2].The reciprocating paddle is often driven over a cathode aspect horizontally by oscillation set outside a plating cell. The paddle reciprocating parallel to a plating side ... Mehr lesen

MHD Electrolyte Flow within an Inter-electrode Gap Driven by a Sinusoidal Electric Field and Constant Magnetic Field

C. Bradley [1], J. Samuel [2],
[1] Benét Laboratories, U.S. Army RDECOM-ARDEC, Watervliet, NY, USA
[2] Department of Mechanical Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA

PECM is a necessary extension to traditional ECM for some high-performance materials. Electrolyte flow in the inter-electrode gap (IEG) can be assisted using a magnetic field to allow higher currents, but this creates a magnetohydrodynamic flow. This paper presents a study of flow ... Mehr lesen

The Effect of Fuel and Oxidant Pumping on the Performance of a Membraneless Microfluidic Fuel Cell

A. F. Tayel [1], M. A. Fathallah [1], M. M. Elsayed [1],
[1] Department of Mechanical Engineering, Alexandria University, Alexandria, Egypt

For the commercialization of membraneless microfluidic fuel cell, voltage and minimum power demand for various applications need a precise selection of fuel and oxidant flow rates to achieve the optimum cell performance. A numerical study on a membraneless microfluidic fuel cell was made ... Mehr lesen

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